K-pop reunion wave gains momentum as nostalgia becomes driving market force

A growing number of K-pop acts from the past are reuniting years after their disbandment, as an expanding market of older fans creates new demand for nostalgia-driven projects.

Groups including I.O.I, Secret and SeeYa have recently returned with reunion activities, joining a trend that industry officials say is being fueled by fans who had followed the artists as teenagers and now have greater purchasing power as adults.

Among the latest examples is Secret, which released the special EP “Secret ...